ISA Transfer Rules UK — How to Move Your ISA Without Losing Tax-Free Status

Transferring your ISA to a better provider is one of the simplest and most underused ways to earn more on your savings — and it is completely free in most cases. The problem is that many people either do not know they can transfer, or they assume getting a better rate means closing their old ISA and opening a new one. Doing it that way is a costly mistake that can permanently deprive you of tax-free status on your savings.

Done correctly through the formal transfer process, an ISA transfer preserves your tax-free status entirely, uses none of your annual allowance, and takes as little as five working days for straightforward cash transfers.

Read more: See our Isas guide for a complete overview of this topic.

The Golden Rule of ISA Transfers

Never withdraw ISA money and redeposit it at a new provider. This is the most important rule in ISA management. If you take cash out of an ISA — however briefly — and pay it into a new account, HMRC treats the deposit as a new 2026/27 contribution. That means it counts against your £20,000 annual allowance, and if your allowance is already used up, the excess loses its tax-free status permanently.

The correct approach is to instruct the new provider to request the funds directly from your old provider using an official ISA transfer process. You never need to touch the money yourself.

ISA Transfer Rules at a Glance

Types of ISA Transfer

Cash ISA to Cash ISA

This is the most common transfer, driven by savers chasing better interest rates. When a Cash ISA’s rate drops — as often happens when a fixed term ends and the account reverts to a poor variable rate — transferring to a provider offering a higher rate can add hundreds of pounds in extra interest per year.

The process is straightforward: open the new account, fill in the provider’s transfer form, and they handle the rest. You do not need to contact your old provider yourself.

1. Open a new cash ISA with the provider offering the better rate
2. Complete their ISA transfer form (online or paper)
3. The new provider contacts your old provider to request the funds
4. The old provider sends the funds directly
5. The money arrives in your new ISA with its tax-free status fully intact

Timeline: Must complete within 15 working days.

Warning: If you have a fixed-rate Cash ISA, check whether it charges an early closure fee before initiating a transfer. These penalties typically amount to 90–180 days of interest — which can outweigh the rate uplift from switching. In most cases, waiting for the fixed term to mature is the better choice.

Cash ISA to Stocks and Shares ISA

You can move money from a Cash ISA into a Stocks and Shares ISA to pursue investment growth instead of interest. This is a meaningful decision because it changes the nature of the risk your savings face — from inflation risk (cash rates potentially lagging inflation) to market risk (your investments could fall in value).

The transfer process is the same as any other ISA transfer. The only thing to note is there is no “in-specie” option here — cash is cash, so the money transfers and is then available to invest at the new platform.

Stocks and Shares ISA to Stocks and Shares ISA

When transferring between investment platforms — perhaps for lower fees, a better range of funds, or a more user-friendly interface — you have two options: an in-specie transfer or a cash transfer.

In-specie transfers move your actual holdings (funds, shares, ETFs) to the new platform without selling them. This means no time out of the market, no trading costs, and no need to decide when to reinvest. However, both platforms must support in-specie transfers and agree to facilitate them, and the new platform must be able to hold the specific investments you’re moving.

Cash transfers involve selling all your investments at the old platform, transferring the cash, and then reinvesting at the new platform. This works with any two providers, but you will be out of the market for however long the transfer takes — potentially missing out if the market rises during that period, though equally protected if it falls.

Stocks and Shares ISA to Cash ISA

This is less common but sometimes appropriate — for example, when you are approaching retirement and want to de-risk, or when you need money within the next few years and cannot afford potential investment losses.

Your investments will be sold at the old platform, the cash transferred to the new provider, and deposited in your Cash ISA. If the market is down when you transfer, you will realise losses on your investments. This is worth considering before deciding to switch — sometimes staying invested for longer, even in a falling market, leads to better outcomes than switching to cash.

Lifetime ISA Transfers

Lifetime ISAs can be transferred between LISA providers, but transferring a LISA to any other type of ISA triggers the 25% withdrawal penalty — which costs you your entire government bonus plus approximately 6.25% of your own savings. This is a severe penalty and should almost never be done unless you have a qualifying reason to access the funds.

If you have a Lifetime ISA and want more flexibility, the answer is generally to open a separate ISA for flexible savings rather than transferring the LISA, which should be left to grow for its intended purpose.

Current Year vs Previous Year Transfers

This is the most misunderstood aspect of ISA transfers. The rules are different depending on whether you are moving money contributed in the current tax year or from previous years.

For previous years’ ISA savings, you can transfer any amount — full or partial. If you have £50,000 saved across previous years, you can choose to transfer £30,000 to a new provider while leaving £20,000 where it is.

For the current tax year’s contributions, the rules are stricter. You must transfer the full amount contributed since 6 April — you cannot do a partial transfer on the current year’s portion.

Example: You have £50,000 from previous years and £8,000 added in 2026/27. You can move any amount of the £50,000 to a new provider. But the £8,000 must either stay where it is or move entirely to the new provider — you cannot split it.

Step-by-Step Transfer Process

The transfer process is initiated and managed by your new provider. You do not need to contact your old provider to start a transfer — only the new one.

Most modern providers offer online transfer forms and provide progress updates. If there are delays, your new provider should chase the old one on your behalf — you generally do not need to intervene.

Transfer Timelines

Regulatory rules set maximum transfer times, and providers that fail to meet them can be subject to complaints. In practice, straightforward electronic cash transfers often complete faster than the maximum.

If your provider exceeds the maximum timeline without good reason, you are entitled to complain — initially to the provider, and then to the Financial Ombudsman if they do not resolve it.

Common Transfer Mistakes

Costs to Watch For

The good news is that most modern ISA providers charge nothing to accept or send a transfer. The main costs to be aware of are early exit penalties on fixed-rate accounts and the LISA penalty, which is a regulatory withdrawal charge rather than a provider fee.

When to Transfer Your ISA

Not every rate difference justifies the hassle of a transfer, but in many cases it is absolutely worth doing — especially for Cash ISAs sitting on poor variable rates after a fixed term ended.

Related Guides

• Best Cash ISA Rates
• Stocks and Shares ISA Guide
• Lifetime ISA Guide
• Flexible ISA Explained
• Junior ISA Guide
• ISA Allowance 2026/27
• ISA vs Pension Comparison